### Home > CC4 > Chapter A > Lesson A.1.1 > Problem A-9

A-9.

The word “evaluate” has many different meanings. In math, when you are asked to

**evaluate**an expression for a specified value of the variable(s), you are being asked to determine the value of the expression. You do this by replacing a variable with the given number and calculating the result. Homework Help ✎Evaluate the expressions below for the given values.

−4

*d*+ 3 if*d*= −1*k*−*m*if*k*= 4 and*m*= −10if*t*= 6 and*w*= −3*x*^{2}+*y*^{2}if*x*= 7 and*y*= 5

Substitute −1 for *d*.

−4(−1) + 3

Simplify the terms and combine them.

4 + 3 = 7

7

Follow the steps in part (a).

Put everything you substituted inside parentheses so you do not lose your negative signs.

(4) − (−10)

Follow the steps in part (a).

−2

Follow the steps in part (a).